(2013·北京，35)—You needn't take an umbrella.It isn't going to rain.—Well, I don't know.It________do.

On rainy days, accidents ______ happen sometimes on steep roads．

— When shall we meet your cousin at the station?— His plane took off two hours ago, and it        reach at 5 pm.

For those of you who ________ a few very popular articles that came out last week, check out this mail.

Tom, along with three other boys,     seen playing football a moment ago.